This attribute is ignored if there is no plunge move in the operation. For example, if there is no plunge move between a rough and finish operation, the plunge point would be ignored for the finish operation.
A plunge point is ignored if it would result in a gouge to the part, or if the tool would gouge when moving to the starting point of the toolpath. For example if you specify a plunge point that is closer to a wall than the tool radius, the plunge point is ignored.
A warning is displayed in the Operations sheet when FeatureCAM ignores a plunge point.
You can use a curve to specify multiple plunge points.